MSFinals-1801
A 32-year-old woman visits her GP with complaints of left-sided pelvic pain and deep dyspareunia at 16 weeks of pregnancy. She has not experienced any vaginal bleeding, discharge, or dysuria. Her pregnancy has been uncomplicated so far, and she has a gravid uterus that is large for her gestational age. Her vital signs are stable, with a temperature of 37.1ºC, blood pressure of 110/70 mmHg, heart rate of 70 beats/min, and respiratory rate of 18 breaths/minute. She had an intrauterine system for menorrhagia before conception and has no other medical history. What is the most probable cause of her symptoms?